From b8ce24183e70feb522c99a3d535bba84ccabc5ff Mon Sep 17 00:00:00 2001 From: reinelt <> Date: Sun, 17 Aug 2003 06:57:04 +0000 Subject: [lcd4linux @ 2003-08-17 06:57:04 by reinelt] complete rewrite of the Crystalfontz driver --- Crystalfontz.c | 777 ++++++++++++++++++++++----------------------------------- 1 file changed, 304 insertions(+), 473 deletions(-) (limited to 'Crystalfontz.c') diff --git a/Crystalfontz.c b/Crystalfontz.c index a1bea63..4479210 100644 --- a/Crystalfontz.c +++ b/Crystalfontz.c @@ -1,4 +1,4 @@ -/* $Id: Crystalfontz.c,v 1.10 2003/07/24 04:48:09 reinelt Exp $ +/* $Id: Crystalfontz.c,v 1.11 2003/08/17 06:57:04 reinelt Exp $ * * driver for display modules from Crystalfontz * @@ -19,6 +19,9 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * $Log: Crystalfontz.c,v $ + * Revision 1.11 2003/08/17 06:57:04 reinelt + * complete rewrite of the Crystalfontz driver + * * Revision 1.10 2003/07/24 04:48:09 reinelt * 'soft clear' needed for virtual rows * @@ -53,529 +56,357 @@ * Revision 1.3 2000/06/04 21:43:50 herp * minor bugfix (zero length) * - * */ -#include -#include -#include -#include -#include -#include -#include - -#include "debug.h" -#include "cfg.h" -#include "lock.h" -#include "display.h" -#include "bar.h" -#include "Crystalfontz.h" - -#define XRES 6 -#define YRES 8 -#define BARS ( BAR_L | BAR_R | BAR_H2 ) +#include +#include +#include +#include +#include +#include +#include + +#include "debug.h" +#include "cfg.h" +#include "lock.h" +#include "display.h" +#include "bar.h" + +#define XRES 5 +#define YRES 8 +#define CHARS 8 static LCD Lcd; static char *Port=NULL; static speed_t Speed; static int Device=-1; - -static char *Txtbuf,*BackupTxtbuf; /* text (+backup) buffer */ -static char *Barbuf,*BackupBarbuf; /* bar (+backup) buffer */ -static char *CustCharMap; -static int tdim,bdim; /* text/bar dimension */ -static char isTxtDirty; -static char *isBarDirty; -static char isAnyBarDirty; - -int cryfonquit(void) { - - debug ("closing port %s", Port); - close(Device); - unlock_port(Port); - exit(0); +static int GPO; + +static char *FrameBuffer1=NULL; +static char *FrameBuffer2=NULL; + + +static int CF_open (void) +{ + int fd; + pid_t pid; + struct termios portset; + + if ((pid=lock_port(Port))!=0) { + if (pid==-1) + error ("Crystalfontz: port %s could not be locked", Port); + else + error ("Crystalfontz: port %s is locked by process %d", Port, pid); + return -1; + } + fd = open(Port, O_RDWR | O_NOCTTY | O_NDELAY); + if (fd==-1) { + error ("Crystalfontz: open(%s) failed: %s", Port, strerror(errno)); + unlock_port(Port); + return -1; + } + if (tcgetattr(fd, &portset)==-1) { + error ("Crystalfontz: tcgetattr(%s) failed: %s", Port, strerror(errno)); + unlock_port(Port); + return -1; + } + cfmakeraw(&portset); + cfsetospeed(&portset, Speed); + if (tcsetattr(fd, TCSANOW, &portset)==-1) { + error ("Crystalfontz: tcsetattr(%s) failed: %s", Port, strerror(errno)); + unlock_port(Port); + return -1; + } + return fd; } -static int cryfonopen() { -int fd; -pid_t pid; -struct termios portset; - if ((pid=lock_port(Port))!=0) { - if (pid==-1) error ("Crystalfontz: port %s could not be locked",Port); - else error ("Crystalfontz: port %s is locked by process %d",Port,pid); - return -1; - } - fd=open(Port,O_RDWR|O_NOCTTY|O_NDELAY); - if (fd==-1) { - error ("Crystalfontz: open(%s) failed: %s", Port, strerror(errno)); - unlock_port(Port); - return -1; - } - if (tcgetattr(fd,&portset)==-1) { - error ("Crystalfontz: tcgetattr(%s) failed: %s", Port, strerror(errno)); - unlock_port(Port); - return -1; - } - cfmakeraw(&portset); - cfsetospeed(&portset,Speed); - if (tcsetattr(fd, TCSANOW, &portset)==-1) { - error ("Crystalfontz: tcsetattr(%s) failed: %s", Port, strerror(errno)); - unlock_port(Port); - return -1; - } - return fd; +static void CF_write (char *string, int len) +{ + if (Device==-1) return; + if (write (Device, string, len)==-1) { + if (errno==EAGAIN) { + usleep(1000); + if (write (Device, string, len)>=0) return; + } + error ("Crystalfontz: write(%s) failed: %s", Port, strerror(errno)); + } } -int cryfoninit(LCD *Self) { -char *port; -char *speed; -char *backlight; -char *contrast; -char cmd_backlight[2]={ CRYFON_BACKLIGHT_CTRL, }; -char cmd_contrast[2]={ CRYFON_CONTRAST_CTRL, }; - - Lcd=*Self; - - if (Port) { - free(Port); - Port=NULL; - } - - if ((port=cfg_get("Port",NULL))==NULL || *port=='\0') { - error ("CrystalFontz: no 'Port' entry in %s", cfg_file()); - return -1; - } - if (port[0]=='/') Port=strdup(port); - else { - Port=(char *)malloc(5/*/dev/ */+strlen(port)+1); - sprintf(Port,"/dev/%s",port); - } - - speed=cfg_get("Speed","9600"); - switch(atoi(speed)) { - case 1200: - Speed=B1200; - break; - case 2400: - Speed=B2400; - break; - case 9600: - Speed=B9600; - break; - case 19200: - Speed=B19200; - break; - default: - error ("CrystalFontz: unsupported speed '%s' in '%s'", speed, cfg_file()); - return -1; - } - debug ("using port %s at %d baud", Port, atoi(speed)); +static int CF_backlight (void) +{ + char buffer[3]; + int backlight; - if ((Device=cryfonopen())==-1) - return -1; - - tdim=Lcd.rows*Lcd.cols; - bdim=Lcd.rows*Lcd.cols*2; - - Txtbuf=(char *)malloc(tdim); - if (Txtbuf==NULL) { - error ("CrystalFontz: out of memory"); - return -1; - } - CustCharMap=(char *)malloc(tdim); - if (CustCharMap==NULL) { - error ("CrystalFontz: out of memory"); - return -1; - } - BackupTxtbuf=(char *)malloc(tdim); - if (BackupTxtbuf==NULL) { - error ("CrystalFontz: out of memory"); - return -1; - } - Barbuf=(char *)malloc(bdim); - if (Barbuf==NULL) { - error ("CrystalFontz: out of memory"); - return -1; - } - BackupBarbuf=(char *)malloc(bdim); - if (BackupBarbuf==NULL) { - error ("CrystalFontz: out of memory"); - return -1; - } - isBarDirty=(char *)malloc(Lcd.rows); - if (isBarDirty==NULL) { - error ("CrystalFontz: out of memory"); - return -1; - } - memset(Txtbuf,' ',tdim); - memset(CustCharMap,-1,tdim); - memset(BackupTxtbuf,255,tdim); - memset(Barbuf,0,bdim); - memset(BackupBarbuf,0,bdim); - memset(isBarDirty,0,Lcd.rows); - isAnyBarDirty=0; - isTxtDirty=0; - - usleep(350000); - write(Device, CRYFON_HIDE_CURSOR CRYFON_SCROLL_OFF CRYFON_WRAP_OFF,3); - backlight=cfg_get("Backlight",NULL); - if (backlight) { - cmd_backlight[1]=atoi(backlight); - write(Device,cmd_backlight,4); - } - - contrast=cfg_get("Contrast",NULL); - if (contrast) { - cmd_contrast[1]=atoi(contrast); - write(Device,cmd_contrast,2); - } - - return 0; + backlight=atoi(cfg_get("Backlight","0")); + snprintf (buffer, 3, "\016%c", backlight); + CF_write (buffer, 2); + return 0; } -int cryfonclear(int full) { - memset(Txtbuf,' ',tdim); - memset(Barbuf,0,bdim); - return 0; -} -int cryfonput(int row,int col,char *text) { -int pos; +static int CF_contrast (void) +{ + char buffer[3]; + int contrast; - pos=row*Lcd.cols+col; - memcpy(Txtbuf+pos,text,strlen(text)); - isTxtDirty|=memcmp(Txtbuf+pos,BackupTxtbuf+pos,strlen(text)); - return 0; + contrast=atoi(cfg_get("Contrast","50")); + snprintf (buffer, 3, "\017%c", contrast); + CF_write (buffer, 2); + return 0; } -static unsigned char p1[] = { 0x3f,0x1f,0x0f,0x07,0x03,0x01,0x00 }; -static unsigned char p2[] = { 0x00,0x20,0x30,0x38,0x3c,0x3e,0x3f }; - -static void blacken(int bitfrom,int len,int pos,int startbyte,int endbyte) { - - if (len<1) return; - if (startbyte==endbyte) - Barbuf[pos] |= - (p1[bitfrom%XRES] & p2[1+((bitfrom+len-1)%XRES)]); - else { - int n; - Barbuf[pos] |= p1[bitfrom%XRES]; - n=endbyte-startbyte-1; - if (n>0) memset(Barbuf+pos+1,0x3f,n); - Barbuf[pos+n+1] |= p2[1+((bitfrom+len-1)%XRES)]; - } -} -static void whiten(int bitfrom,int len,int pos,int startbyte,int endbyte) { - - if (len<1) return; - if (startbyte==endbyte) - Barbuf[pos] &= - (p2[bitfrom%XRES] | p1[1+((bitfrom+len-1)%XRES)]); - else { - int n; - Barbuf[pos] &= p2[bitfrom%XRES]; - n=endbyte-startbyte-1; - if (n>0) memset(Barbuf+pos+1,0x00,n); - Barbuf[pos+n+1] &= p1[1+((bitfrom+len-1)%XRES)]; - } -} +static void CF_define_char (int ascii, char *buffer) +{ + char cmd[3]="031"; // set custom char bitmap -int cryfonbar(int type,int row,int col,int max,int len1,int len2) { -int endb,maxb; -int bitfrom; -int pos; - - if (len1<1) len1=1; - else if (len1>max) len1=max; - - if (len2<1) len2=1; - else if (len2>max) len2=max; - - bitfrom=col*XRES; - endb=(bitfrom+len1-1)/XRES; - pos=row*Lcd.cols*2; - - switch(type) { - case BAR_L: - blacken(bitfrom,len1,pos+col,col,endb); - endb=(bitfrom+len1)/XRES; - maxb=(bitfrom+max-1)/XRES; - whiten(bitfrom+len1,max-len1,pos+endb,endb,maxb); - if (len1==len2) - memcpy(Barbuf+pos+col+Lcd.cols, - Barbuf+pos+col, - maxb-col+1); - else { - pos+=Lcd.cols; - endb=(bitfrom+len2-1)/XRES; - blacken(bitfrom,len2,pos+col,col,endb); - endb=(bitfrom+len2)/XRES; - whiten(bitfrom+len2,max-len2,pos+endb,endb,maxb); - } - break; - case BAR_R: - blacken(bitfrom,len1,pos+col,col,endb); - endb=(bitfrom+len1)/XRES; - maxb=(bitfrom+max-1)/XRES; - whiten(bitfrom+len1,max-len1,pos+endb,endb,maxb); - if (len1==len2) - memcpy(Barbuf+pos+col+Lcd.cols, - Barbuf+pos+col, - maxb-col+1); - else { - pos+=Lcd.cols; - endb=(bitfrom+len2-1)/XRES; - blacken(bitfrom,len2,pos+col,col,endb); - endb=(bitfrom+len2)/XRES; - whiten(bitfrom+len2,max-len2,pos+endb,endb,maxb); - } - break; - } - isBarDirty[row]=1; - isAnyBarDirty=1; /* dont know exactly, check anyway */ - return 0; + cmd[1]=(char)ascii; + CF_write (cmd, 2); + CF_write (buffer, 8); } -static int txt_lc=-1,txt_lr=-1; -static void writeTxt(char r,char c,int itxt,int len) { -static char cmd_goto[3]=CRYFON_GOTO; - - if (txt_lr!=r || txt_lc!=c) { - if (r==0 && c==0) write(Device,CRYFON_HOME,1); - else { - cmd_goto[1]=(unsigned char)c; - cmd_goto[2]=(unsigned char)r; - write(Device,(char *)&cmd_goto,3); - } - } - txt_lr=r; - txt_lc=c+len; - write(Device,Txtbuf+itxt,len); +static int CF_clear (int full) +{ + memset (FrameBuffer1, ' ', Lcd.rows*Lcd.cols*sizeof(char)); + bar_clear(); + GPO=0; + + if (full) { + memset (FrameBuffer2, ' ', Lcd.rows*Lcd.cols*sizeof(char)); + // Fixme: is there a "clear screen" command? + // CF_write ("\000", 1); // Clear Screen + } + + return 0; } -static void writeTxtDiff() { -int spos,scol; -int i,j,k; - - k=0; - txt_lr=txt_lc=-1; - for (i=0;i-1) { - writeTxt((char)i,(char)scol,spos,k-spos); - memcpy(BackupTxtbuf+spos,Txtbuf+spos,k-spos); - spos=-1; - } - k++; - } - if (spos>-1) { - writeTxt((char)i,(char)scol,spos,k-spos); - memcpy(BackupTxtbuf+spos,Txtbuf+spos,k-spos); - } - } -} -/* private bar flushing routines */ - -static char BarCharBuf[256]; -static int bi=0; - -static void flushBarCharBuf() { - if (bi) { - write(Device,BarCharBuf,bi); /* flush buffer */ - tcdrain(Device); - bi=0; - } +static int CF_init (LCD *Self) +{ + char *port; + char *speed; + + Lcd=*Self; + + // Init the framebuffers + FrameBuffer1 = (char*)malloc(Lcd.cols*Lcd.rows*sizeof(char)); + FrameBuffer2 = (char*)malloc(Lcd.cols*Lcd.rows*sizeof(char)); + if (FrameBuffer1==NULL || FrameBuffer2==NULL) { + error ("Crystalfontz: framebuffer could not be allocated: malloc() failed"); + return -1; + } + + if (Port) { + free (Port); + Port=NULL; + } + + port=cfg_get ("Port",NULL); + if (port==NULL || *port=='\0') { + error ("Crystalfontz: no 'Port' entry in %s", cfg_file()); + return -1; + } + Port=strdup(port); + + speed=cfg_get("Speed","19200"); + + switch (atoi(speed)) { + case 1200: + Speed=B1200; + break; + case 2400: + Speed=B2400; + break; + case 9600: + Speed=B9600; + break; + case 19200: + Speed=B19200; + break; + default: + error ("Crystalfontz: unsupported speed '%s' in %s", speed, cfg_file()); + return -1; + } + + debug ("using port %s at %d baud", Port, atoi(speed)); + + Device=CF_open(); + if (Device==-1) return -1; + + bar_init(Lcd.rows, Lcd.cols, XRES, YRES, CHARS); + bar_add_segment( 0, 0,255, 32); // ASCII 32 = blank + bar_add_segment(255,255,255,255); // ASCII 255 = block + + // MR: why such a large delay? + usleep(350000); + + CF_clear(1); + + CF_write ("\004", 1); // hide cursor + CF_write ("\024", 1); // scroll off + CF_write ("\030", 1); // wrap off + + CF_backlight(); + CF_contrast(); + + return 0; } -static void writeBarCharBuf(char *s,int len) { - if (bi+len>=sizeof(BarCharBuf)) { - flushBarCharBuf(); - } - memcpy(BarCharBuf+bi,s,len); - bi+=len; -} -static struct { - char use_count; /* 0 - unused */ - char data[8]; -} cust_chars[8] = { - { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, } -}; +void CF_goto (int row, int col) +{ + char cmd[3]="\021"; // set cursor position -static int search_cust_char(char c1,char c2) { -int i; - for (i=0;i<8;i++) { - if (cust_chars[i].data[0]==c1 - && cust_chars[i].data[4]==c2) { - return i; - } - } - return -1; /* not found */ + if (row==0 && col==0) { + CF_write ("\001", 1); // cursor home + } else { + cmd[1]=(char)col; + cmd[2]=(char)row; + CF_write(cmd,3); + } } -static void set_cust_char(int ci,char c1,char c2) { -static char cmd_cust[10] = CRYFON_SET_CUSTOM_CHAR_BITMAP; - memset(cust_chars[ci].data,c1,4); - memset(cust_chars[ci].data+4,c2,4); - cmd_cust[1]=ci; - memset(cmd_cust+2,c1,4); - memset(cmd_cust+6,c2,4); - writeBarCharBuf(cmd_cust,10); +int CF_put (int row, int col, char *text) +{ + char *p=FrameBuffer1+row*Lcd.cols+col; + char *t=text; + + while (*t && col++<=Lcd.cols) { + *p++=*t++; + } + return 0; } -static int alloc_cust_char(char c1,char c2) { -static char allzero[8]={0, }; -int i; - /* first, try to allocate a never used entry */ - - for(i=0;i<8;i++) - if (memcmp(cust_chars[i].data,allzero,8)==0) { - set_cust_char(i,c1,c2); - return i; - } - - /* if that fails, pick an entry with is not yet in use */ - - for(i=0;i<8;i++) - if (cust_chars[i].use_count==0) { - set_cust_char(i,c1,c2); - return i; - } - return -1; /* no free char */ +int CF_bar (int type, int row, int col, int max, int len1, int len2) +{ + return bar_draw (type, row, col, max, len1, len2); } -static void use_cust_char(int i,int j,int ci) { -int x; - x=i*Lcd.cols+j; - if (CustCharMap[x]==-1) { - cust_chars[ci].use_count++; - CustCharMap[x]=ci; - } - /* else: internal consistency failure */ - else { - error ("Crystalfontz: internal consistency failure 1"); - exit(0); - } -} -static void unuse_cust_char(int i,int j) { -int ci,x; - x=i*Lcd.cols+j; - ci=CustCharMap[x]; - if (ci>-1) { - CustCharMap[x]=-1; - cust_chars[ci].use_count--; - if (cust_chars[i].use_count==-1) { - error ("Crystalfontz: internal consistency failure 2"); - exit(0); - } +static int CF_flush (void) +{ + int row, col, pos1, pos2; + int c, equal; + + bar_process(CF_define_char); + + for (row=0; row4) break; + } else { + pos2=col; + equal=0; } + } + CF_write (FrameBuffer1+row*Lcd.cols+pos1, pos2-pos1+1); + } + } + + memcpy (FrameBuffer2, FrameBuffer1, Lcd.rows*Lcd.cols*sizeof(char)); + + return 0; } -static int bar_lc=-1,bar_lr=-1; +int CF_quit (void) +{ + info("Crystalfontz: shutting down."); -static void writeChar(unsigned char r,unsigned char c,unsigned char ch) { -static char cmd_goto[3]=CRYFON_GOTO; + debug ("closing port %s", Port); + close (Device); + unlock_port(Port); - if (bar_lr!=r || bar_lc!=c) { - if (r==0 && c==0) writeBarCharBuf(CRYFON_HOME,1); - else { - cmd_goto[1]=(unsigned char)c; - cmd_goto[2]=(unsigned char)r; - writeBarCharBuf((char *)&cmd_goto,3); - } - } - bar_lr=r; - bar_lc=c++; - writeBarCharBuf(&ch,1); -} + if (FrameBuffer1) { + free(FrameBuffer1); + FrameBuffer1=NULL; + } -static void writeBarDiff() { -char c1,c2; -int i,j,k1,k2,ci; - - for (i=0;i-1) { /* found: reuse that char */ - unuse_cust_char(i,j); - writeChar(i,j,128+ci); - use_cust_char(i,j,ci); - } - else { /* not found: get a new one */ - ci=alloc_cust_char(c1,c2); - if (ci>-1) { - unuse_cust_char(i,j); - writeChar(i,j,128+ci); - use_cust_char(i,j,ci); - } - else error ("failed to alloc a custom char"); - } - } - BackupBarbuf[k1]=c1; - BackupBarbuf[k2]=c2; - } - k1++; - k2++; - } - } - isBarDirty[i]=0; - } - flushBarCharBuf(); -} + if (FrameBuffer2) { + free(FrameBuffer2); + FrameBuffer2=NULL; + } -int cryfonflush() { - - if (isTxtDirty) { - writeTxtDiff(); - isTxtDirty=0; - } - if (isAnyBarDirty) { - writeBarDiff(); - isAnyBarDirty=0; - } - - return 0; + return (0); } + LCD Crystalfontz[] = { - { "626",2,16,XRES,YRES,BARS,0,cryfoninit,cryfonclear,cryfonput,cryfonbar,NULL,cryfonflush,cryfonquit }, - { "636",2,16,XRES,YRES,BARS,0,cryfoninit,cryfonclear,cryfonput,cryfonbar,NULL,cryfonflush,cryfonquit }, - { "632",2,16,XRES,YRES,BARS,0,cryfoninit,cryfonclear,cryfonput,cryfonbar,NULL,cryfonflush,cryfonquit }, - { "634",4,20,XRES,YRES,BARS,0,cryfoninit,cryfonclear,cryfonput,cryfonbar,NULL,cryfonflush,cryfonquit }, + { name: "626", + rows: 2, + cols: 16, + xres: XRES, + yres: YRES, + bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, + gpos: 0, + init: CF_init, + clear: CF_clear, + put: CF_put, + bar: CF_bar, + gpo: NULL, + flush: CF_flush, + quit: CF_quit + }, + { name: "636", + rows: 2, + cols: 16, + xres: XRES, + yres: YRES, + bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, + gpos: 0, + init: CF_init, + clear: CF_clear, + put: CF_put, + bar: CF_bar, + gpo: NULL, + flush: CF_flush, + quit: CF_quit + }, + { name: "632", + rows: 2, + cols: 16, + xres: XRES, + yres: YRES, + bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, + gpos: 0, + init: CF_init, + clear: CF_clear, + put: CF_put, + bar: CF_bar, + gpo: NULL, + flush: CF_flush, + quit: CF_quit + }, + { name: "634", + rows: 4, + cols: 20, + xres: XRES, + yres: YRES, + bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, + gpos: 0, + init: CF_init, + clear: CF_clear, + put: CF_put, + bar: CF_bar, + gpo: NULL, + flush: CF_flush, + quit: CF_quit + }, { NULL } }; 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